Rafa Nadal plays football with a tennis ball during the training in the Open Banc Sabadell, 64 Trophy Conde de Godo, played on the RCT Barcelona1899, on april 19, 2016. (Photo by Urbanandsport/NurPhoto via Getty Images)

Rafa Nadal plays football with a tennis ball during the training in the Open Banc Sabadell, 64 Trophy Conde de Godo, played on the RCT Barcelona1899, on april 19, 2016. (Photo by Urbanandsport/NurPhoto via Getty Images)

Rafa Nadal plays football with a tennis ball during the training in the Open Banc Sabadell, 64 Trophy Conde de Godo, played on the RCT Barcelona1899, on april 19, 2016. (Photo by Urbanandsport/NurPhoto via Getty Images)

Rafa Nadal during the training in the Open Banc Sabadell, 64 Trophy Conde de Godo, played on the RCT Barcelona1899, on april 19, 2016. (Photo by Urbanandsport/NurPhoto via Getty Images)

Rafa Nadal during the training in the Open Banc Sabadell, 64 Trophy Conde de Godo, played on the RCT Barcelona1899, on april 19, 2016. (Photo by Urbanandsport/NurPhoto via Getty Images)